Pitfalls in the dipolar model of the neocortical EEG sources

Jorge Riera, Takeshi Ogawa, Takakuni Goto, Akira Sumiyoshi, Hiroi Nonaka, Alan Evans, Ryuta Kawashima

Research output: Contribution to conferencePaperpeer-review

Abstract

The EEG-based neuroimaging technique depends ultimately on the definition of its forward problem, a relationship between the underlying brain current sources and the observed electric potentials. Brain current sources on a macroscopic scale, in particular those originating in the neocortex, have been assumed dipolar in nature. In this study, we present evidence for the existence of monopolar and quadripolar current sources in the barrel cortex of Wistar rats undergoing 1Hz strong vibrissa deflections. Such evidence stems from concurrent observations of local field potentials from laminar microelectrodes arrays and high-resolution skull EEG recordings.

Original languageEnglish
Pages964-968
Number of pages5
Publication statusPublished - 2010
Event2nd Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2010 - Biopolis, Singapore
Duration: 2010 Dec 142010 Dec 17

Other

Other2nd Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2010
CountrySingapore
CityBiopolis
Period10/12/1410/12/17

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems

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